Tire-tread puller



J. SCHMIDT TIRE TREAD FULLER. APPLICATION FILED JUNE 20, 1919.

3 SHEETS-SHEET I.

p 1 M/VE/VTUI? k r P SQ 5c/unz'ai, f WiZ'YZJQY (1/1 /4 v Z7 M aw 44 (M ATTORNEYS Patented Oct. 5,1920..

J. SCHMIDT. TIRE'TREAD PULLEH. APPLICATION FILED JUNE 20, 19H)- 1,354,84;9 Patented Oct. 5, 1920 r 3 SHEETS-SHEET 2.

INVENZOB un ed "Z4404 Jesse L527 WITNESSES J. SCHMIDT.

TIRE TBEAD FULLER. APPLICATION men JUNE 20. 1919.

1,354,849. Patented 0%- 5,1920.

' s SHEETS-SHEET a.

WITNESSES MLVENTQ/i JQ SSQ Sc iirzzd Maw ATTORNEYS JESSE SCHMIDT. OF TRACY, CALIFOKDTIA.

'I'IRE-'IREAD FULLER.

Applieation filed June 26 My invention relates to tire tread pullers.

Au iin iortant oh'ect of inv invention is to provide a tire tread puller in which the pulling action is so exerted and in which the tire is automat cally so positioned duriirg the pulling action that the traid will he cour pletely and cleanly removed from the tire carcass. I

Other objects and advantages reside in certain novel features of the construction, arrangement and conihination of parts and will become apparent as the description pro- (reeds, reference being had to the accompanying drawings forming part of this specification and in which:

Figure 1 represents a side elevation of the machine disclosing the position of the tire during pulling operation,

Fig. 2 represents a. side elevation oi the machine taken on the opposite side from Fig. l,

Fig. 3 is a tion of the cross section of the lower portran'ic taken on line 3-4-3 ot cross section oi the upper portion of the machine taken on line -t4 ot Fig. is a is mounted. This support. may he in the form of sills or may constitute the flooring ot the place in which the machine is utilized. To this support 10 a base 11 of the machine is secured by means of bolts and nuts 12 or any suitable fastening means. The frame of the machine, indicated generally by 13, stands on the base 11 and this t 'anie is preterably formed integral with the hase ll and consists of a. lower portion and an upper portion. The lower portion is preferably provided with reintoroing; wehs 13 which are tot-med integral with the base and the lower portion or the frame and are widest Specification of Letters Patent Serial No 305463.

at the liase and gradua l v decrease in cross sectional area as indicated in Fig. 3. The upper portion or" the frame is torn'icd integral with the lower portion and presents the cross section shown in Fig. l. The up pcr portion ot' the trame is preteralilv adapted to carry the operating i'iarts ot the machine and provided with suitable journals tor this purpose to he hereinafter more tall; described. K

it the extreme portion of the frame and disgosed centrally thereof is a hearin 14. t windingsha ft 1;) is join naled in this bearing preferably horizontal. and is provided at its inner end with a coilar 16 and at its outer end with a large gear 17. The collar is preterably Fi ifiilifll integral with the shaft winding arhor his winding a ho consists of spaced semicircular portio which define a slot extending from its outer end to the collar. Directly heiow the windin; shaft hearing 14 is provided a power shat" hearing 2th the axis of which is preterahiy in the same vertical plane as the r. s of the winding shatt hearing, Jonrnaled in this hearing is a power shaft 21 having: a collar 22 formed integral therewith at its inner end and a small ear 23') secured on its outer end and meshing :ith the large Lear 11'' The shaft- 21 provided with a threaded extension 2%; and upon this extension a hand crank 2.? is mounted and. secured in a nut- QG. l t to he understood however that a motor or other suitahle means may he employed to impart power to the power snatt 2L.

symmetrically disposed on each side of the center tine o t the machine and slightlv below the power shaft are provided guide roller bearings 27, also preferably horizontal. Guide rollers indicated generally hv 528 are iournaled in these hearings Fits these guide rollers are identical a description of one will serve as a description of hoth. The stud shaft of each guide roller is pro vided with a reduced extension 30 which extends throug'h and is join-hated in the roller hearing. The shoulder 31. together with nut 32 serves to rigidl i secure nd shaft to the frame. Rotatahly flliillflt'jti on the stud shaft a roller 32 and i roller is maintained on the stud shaft by a circular plate 33 secured to the outer end of the stud suilicient distance below the guide rollers to allow placing and removal of the tire without any interference or engagement with the guide rollers. a The hearings for the various shafts described herein above are provided with suitable ducts 37 to facilitate lubrication. The tire from which the tread is to be pulled is first. cut around the lines 38- as shown in Figs. 1 and 2 and the tread is then started in any desired manner so as to loosen a portion thereof shown at 36. The tire is then placed on the pin and is supported thereon while the loosened end of the tread is placed in the slot of the winding arbor. The power is then applied to the power shaft preferably by means of turning the crank 25 and this motion is i transmitted through the reduction gearing 23', 17 to the winding shaft and winding arbor. The. pulling force or action being thus exerted the tire is lifted from the supporting pin 35 and is engaged by the guide rollers 28 which serve to automatically prop erly position the tire so that the pulling force of the winding arbor will have maximum effect to the end of completely and cleanly removing the tread. The action of the circular plates 33 which engages the tire is to prevent lateral displacement during the entire operation. The rollers 32 resolve the pulling forceof the winding arbor into a component force which produces the proper stress to effect the pulling of the tread and a relatively small tangential component which serves to automatically feed the tire circumferentially. The component force effecting the pulling of the tread is produced by the guide rollers acting as'an abutment limiting the vertical movement of the tire toward the winding arbor. The component 'force effecting the feed of the tire to the proper position with respect to the line of action of .the pulling force is effected by the rotation of the roller 32 which rotation is imparted 'to the roller from the loosened portion 36 by virtue of this loosened portion bearing against the faceof the roller during its movement from the tire to the-winding arbor.

In this manner the tread is completely and cleanly removed from the tire being wound upon the winding arbor during this operation. The tire carcass then drops down upon the pin 35. The'carcass may then be removed from the pin and the tread from the winding arbor so that the operation may be repeated as desired.

a Winding shaft,-having a winding arbor adapted to engage the tread for removing the same from the tire, journaled in said frame, stud shafts secured to said frame adapted to act as .abutments to limit the movement of said tire toward said winding arbor, and rollers on said stud shafts to effect-circumferential feed'of said tire dur ing the pulling operation. v

3. A tire tread puller comprising a frame,

a winding shaft journaled'in the upper portion of the frame and centrally thereof, said winding shaft having a winding arbor adapted to engage the tread for removing the'same from the tire, a power shaft, re duction gearing connecting said power shaft with said winding shaft, means for actuating said power shaft, stud shafts secured to said frame and symmetrically disposed on either side of the center thereof, guide rollers on said shaft, and circular plates associated with said stud shafts.

4. A tire tread puller comprising a frame, a'winding shaft journaled in the upper portion of the frame and centrally thereof, said winding shaft having awinding arbor adapted to engagethe tread for removing the same from the tire, a power lshaft, reduction gearing connecting said powershaft with said winding shaft, means for actuating said power shaft and stud shafts secured to said frame and symmetricaliy disposed on'either side of-th'e center thereof, as and for the purposes set forth.

5. A tire tread puller comprising a fram, a winding shaft journaled in the upper portion of the frame and centrally thereof, said winding shaft having a winding arbor adapted to engage the tread for removing the same from the tire, apower shaft, re-

duction gearing connecting said powershaft with said winding shaft, means fo actuating said power shaft, stud shafts secured to said frame and symmetrically disposed on either'side of the center thereof, and guide rollers on said shaft.

6. A tire tread puller comprising meal s for engaging the tread and pulling the same H x from Ehe tire, an aimsmeiifi ior-iimi iig iha movement of the tin Jul-J. means for feeding the "tire cifi'cumi'ei during the puiiing operation and means "for preventing late fli displacement of he iirs. tire tread s iilsi" compyising means for engaging the tread and pniiii 1: the same from the time 21 i abutment for A T movement 0f the irs toward the pix 11133118 and means for feeding fths uiie circunifei'entiaiiy during the puilii'ig operation.

8. A tire tread puller comprising" means f0? eiip agin the tread and pulling diesame from the tire and means fer *seding; the tire ci icum'fei'cniiniiy (lining the ginning operatiozi.

9. A tire tread puller i-m'iiprising a frame a iim'imnmily dispcswi Winding shafl joui'zmied in said fining ssiz l winding shaft having a Winding arboi' adapted i0 engage the timid for 'AiiiliOYiii" the sums abiitments to frail;

tire. tmvzird the autcmaticziiiy p; aspect to the "or support the tire p1 puiiing operation i017 imn subse 12. A tread pulier comprising means 1 r IOI' engaging ans trend and puihng I e from the tire, an abutment iiiiiiiiiig the movement of the tire toward the puiiing means and a roller on said zibufmens 2ngaging the peripiisry 0f the tire i0 aut0- maticsiiy prsperiy tire 's'iih respect is the trend 1 s.

A tire ad p11 ngngging the 91' from the tire. an movement of means and iidcpeni icaliy specs to t- Zvi ATHEWS. 

